brewer scales provides sequential, diverging and qualitative
colour schemes from ColorBrewer. These are particularly well suited to
display discrete values on a map. See http://colorbrewer2.org for
scale_colour_brewer(..., type = "seq", palette = 1, direction = 1, aesthetics = "colour") scale_fill_brewer(..., type = "seq", palette = 1, direction = 1, aesthetics = "fill") scale_colour_distiller(..., type = "seq", palette = 1, direction = -1, values = NULL, space = "Lab", na.value = "grey50", guide = "colourbar", aesthetics = "colour") scale_fill_distiller(..., type = "seq", palette = 1, direction = -1, values = NULL, space = "Lab", na.value = "grey50", guide = "colourbar", aesthetics = "fill")
One of seq (sequential), div (diverging) or qual (qualitative)
If a string, will use that named palette. If a number, will
index into the list of palettes of appropriate
Sets the order of colours in the scale. If 1, the default,
colours are as output by
Character string or vector of character strings listing the
name(s) of the aesthetic(s) that this scale works with. This can be useful, for
example, to apply colour settings to the
if colours should not be evenly positioned along the gradient
this vector gives the position (between 0 and 1) for each colour in the
colour space in which to calculate gradient. Must be "Lab" - other values are deprecated.
Colour to use for missing values
Type of legend. Use
brewer scales were carefully designed and tested on discrete data.
They were not designed to be extended to continuous data, but results often
look good. Your mileage may vary.
distiller scales extend brewer to continuous scales by smoothly
interpolating 6 colours from any palette to a continuous scale.
The following palettes are available for use with these scales:
BrBG, PiYG, PRGn, PuOr, RdBu, RdGy, RdYlBu, RdYlGn, Spectral
Accent, Dark2, Paired, Pastel1, Pastel2, Set1, Set2, Set3
Blues, BuGn, BuPu, GnBu, Greens, Greys, Oranges, OrRd, PuBu, PuBuGn, PuRd, Purples, RdPu, Reds, YlGn, YlGnBu, YlOrBr, YlOrRd
dsamp <- diamonds[sample(nrow(diamonds), 1000), ] (d <- ggplot(dsamp, aes(carat, price)) + geom_point(aes(colour = clarity)))d + scale_colour_brewer()# Change scale label d + scale_colour_brewer("Diamond\nclarity")# Select brewer palette to use, see ?scales::brewer_pal for more details d + scale_colour_brewer(palette = "Greens")d + scale_colour_brewer(palette = "Set1")# scale_fill_brewer works just the same as # scale_colour_brewer but for fill colours p <- ggplot(diamonds, aes(x = price, fill = cut)) + geom_histogram(position = "dodge", binwidth = 1000) p + scale_fill_brewer()# the order of colour can be reversed p + scale_fill_brewer(direction = -1)# the brewer scales look better on a darker background p + scale_fill_brewer(direction = -1) + theme_dark()# Use distiller variant with continous data v <- ggplot(faithfuld) + geom_tile(aes(waiting, eruptions, fill = density)) vv + scale_fill_distiller()v + scale_fill_distiller(palette = "Spectral")